xfi.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * xfi linux driver.
  4 *
  5 * Copyright (C) 2008, Creative Technology Ltd. All Rights Reserved.
  6 */
  7
  8#include <linux/init.h>
  9#include <linux/pci.h>
 10#include <linux/moduleparam.h>
 11#include <linux/pci_ids.h>
 12#include <linux/module.h>
 13#include <sound/core.h>
 14#include <sound/initval.h>
 15#include "ctatc.h"
 16#include "cthardware.h"
 17
 18MODULE_AUTHOR("Creative Technology Ltd");
 19MODULE_DESCRIPTION("X-Fi driver version 1.03");
 20MODULE_LICENSE("GPL v2");
 21
 22static unsigned int reference_rate = 48000;
 23static unsigned int multiple = 2;
 24MODULE_PARM_DESC(reference_rate, "Reference rate (default=48000)");
 25module_param(reference_rate, uint, 0444);
 26MODULE_PARM_DESC(multiple, "Rate multiplier (default=2)");
 27module_param(multiple, uint, 0444);
 28
 29static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 30static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 31static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 32static unsigned int subsystem[SNDRV_CARDS];
 33
 34module_param_array(index, int, NULL, 0444);
 35MODULE_PARM_DESC(index, "Index value for Creative X-Fi driver");
 36module_param_array(id, charp, NULL, 0444);
 37MODULE_PARM_DESC(id, "ID string for Creative X-Fi driver");
 38module_param_array(enable, bool, NULL, 0444);
 39MODULE_PARM_DESC(enable, "Enable Creative X-Fi driver");
 40module_param_array(subsystem, int, NULL, 0444);
 41MODULE_PARM_DESC(subsystem, "Override subsystem ID for Creative X-Fi driver");
 42
 43static const struct pci_device_id ct_pci_dev_ids[] = {
 44	/* only X-Fi is supported, so... */
 45	{ PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_20K1),
 46	  .driver_data = ATC20K1,
 47	},
 48	{ PCI_DEVICE(PCI_VENDOR_ID_CREATIVE, PCI_DEVICE_ID_CREATIVE_20K2),
 49	  .driver_data = ATC20K2,
 50	},
 51	{ 0, }
 52};
 53MODULE_DEVICE_TABLE(pci, ct_pci_dev_ids);
 54
 55static int
 56ct_card_probe(struct pci_dev *pci, const struct pci_device_id *pci_id)
 57{
 58	static int dev;
 59	struct snd_card *card;
 60	struct ct_atc *atc;
 61	int err;
 62
 63	if (dev >= SNDRV_CARDS)
 64		return -ENODEV;
 65
 66	if (!enable[dev]) {
 67		dev++;
 68		return -ENOENT;
 69	}
 70	err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 71			   0, &card);
 72	if (err)
 73		return err;
 74	if ((reference_rate != 48000) && (reference_rate != 44100)) {
 75		dev_err(card->dev,
 76			"Invalid reference_rate value %u!!!\n",
 77			reference_rate);
 78		dev_err(card->dev,
 79			"The valid values for reference_rate are 48000 and 44100, Value 48000 is assumed.\n");
 80		reference_rate = 48000;
 81	}
 82	if ((multiple != 1) && (multiple != 2) && (multiple != 4)) {
 83		dev_err(card->dev, "Invalid multiple value %u!!!\n",
 84			multiple);
 85		dev_err(card->dev,
 86			"The valid values for multiple are 1, 2 and 4, Value 2 is assumed.\n");
 87		multiple = 2;
 88	}
 89	err = ct_atc_create(card, pci, reference_rate, multiple,
 90			    pci_id->driver_data, subsystem[dev], &atc);
 91	if (err < 0)
 92		goto error;
 93
 94	card->private_data = atc;
 95
 96	/* Create alsa devices supported by this card */
 97	err = ct_atc_create_alsa_devs(atc);
 98	if (err < 0)
 99		goto error;
100
101	strscpy(card->driver, "SB-XFi");
102	strscpy(card->shortname, "Creative X-Fi");
103	snprintf(card->longname, sizeof(card->longname), "%s %s %s",
104		 card->shortname, atc->chip_name, atc->model_name);
105
106	err = snd_card_register(card);
107	if (err < 0)
108		goto error;
109
110	pci_set_drvdata(pci, card);
111	dev++;
112
113	return 0;
114
115error:
116	snd_card_free(card);
117	return err;
118}
119
120static void ct_card_remove(struct pci_dev *pci)
121{
122	snd_card_free(pci_get_drvdata(pci));
123}
124
125#ifdef CONFIG_PM_SLEEP
126static int ct_card_suspend(struct device *dev)
127{
128	struct snd_card *card = dev_get_drvdata(dev);
129	struct ct_atc *atc = card->private_data;
130
131	return atc->suspend(atc);
132}
133
134static int ct_card_resume(struct device *dev)
135{
136	struct snd_card *card = dev_get_drvdata(dev);
137	struct ct_atc *atc = card->private_data;
138
139	return atc->resume(atc);
140}
141
142static SIMPLE_DEV_PM_OPS(ct_card_pm, ct_card_suspend, ct_card_resume);
143#define CT_CARD_PM_OPS	&ct_card_pm
144#else
145#define CT_CARD_PM_OPS	NULL
146#endif
147
148static struct pci_driver ct_driver = {
149	.name = KBUILD_MODNAME,
150	.id_table = ct_pci_dev_ids,
151	.probe = ct_card_probe,
152	.remove = ct_card_remove,
153	.driver = {
154		.pm = CT_CARD_PM_OPS,
155	},
156};
157
158module_pci_driver(ct_driver);